<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category    ZendX
 * @package     ZendX_JQuery
 * @subpackage  View
 * @copyright   Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license     http://framework.zend.com/license/new-bsd     New BSD License
 * @version     $Id: AccordionContainer.php 18045 2009-09-09 17:31:25Z beberlei $
 */

/**
 * @see ZendX_JQuery_View_Helper_UiWidget
 */
require_once "ZendX/JQuery/View/Helper/UiWidget.php";

/**
 * jQuery Accordion View Helper
 *
 * @uses 	   Zend_Json
 * @package    ZendX_JQuery
 * @subpackage View
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class ZendX_JQuery_View_Helper_AccordionContainer extends ZendX_JQuery_View_Helper_UiWidget
{
	/**
	 * @var array
	 */
	protected $_panes = array();

	/**
	 * @var string
	 */
	protected $_elementHtmlTemplate = null;

	/**
	 * Add Accordion Pane for the Accordion-Id
	 *
	 * @param  string $id
	 * @param  string $name
	 * @param  string $content
	 * @return ZendX_JQuery_View_Helper_AccordionContainer
	 */
	public function addPane($id, $name, $content, array $options=array())
	{
		if(!isset($this->_panes[$id])) {
			$this->_panes[$id] = array();
		}
		if(strlen($name) == 0 && isset($options['title'])) {
			$name = $options['title'];
		}
		$this->_panes[$id][] = array('name' => $name, 'content' => $content, 'options' => $options);
		return $this;
	}

	/**
	 * Render Accordion with the currently registered elements.
	 *
	 * If no arguments are given, the accordion object is returned so that
	 * chaining the {@link addPane()} function allows to register new elements
	 * for an accordion.
	 *
	 * @link   http://docs.jquery.com/UI/Accordion
	 * @param  string $id
	 * @param  array  $params
	 * @param  array  $attribs
	 * @return string|ZendX_JQuery_View_Helper_AccordionContainer
	 */
	public function accordionContainer($id=null, array $params=array(), array $attribs=array())
	{
		if(0 === func_num_args()) {
			return $this;
		}

		if(!isset($attribs['id'])) {
			$attribs['id'] = $id;
		}

		$html = "";
		if(isset($this->_panes[$id])) {
			foreach($this->_panes[$id] AS $element) {
				$html .= sprintf($this->getElementHtmlTemplate(), $element['name'], $element['content']).PHP_EOL;
			}

			if(count($params) > 0) {
				$params = ZendX_JQuery::encodeJson($params);
			} else {
				$params = "{}";
			}

			$js = sprintf('%s("#%s").accordion(%s);',
			ZendX_JQuery_View_Helper_JQuery::getJQueryHandler(),
			$attribs['id'],
			$params
			);
			$this->jquery->addOnLoad($js);

			$html = $this->getAccordionTemplate($attribs, $html);
		}
		return $html;
	}

	/**
	 * @param  array $attribs
	 * @param  string $html
	 * @return string
	 */
	protected function getAccordionTemplate($attribs, $html)
	{
		if(version_compare($this->jquery->getUiVersion(), "1.7.0") >= 0) {
			$html = '<div'
			. $this->_htmlAttribs($attribs)
			. '>'.PHP_EOL
			. $html
			. '</div>'.PHP_EOL;
		} else {
			$html = '<ul'
			. $this->_htmlAttribs($attribs)
			. '>'.PHP_EOL
			. $html
			. '</ul>'.PHP_EOL;
		}
		return $html;
	}

	/**
	 * @return string
	 */
	protected function getElementHtmlTemplate()
	{
		if($this->_elementHtmlTemplate == null) {
			if(version_compare($this->jquery->getUiVersion(), "1.7.0") >= 0) {
				$this->_elementHtmlTemplate = '<h3><a href="#">%s</a></h3><div>%s</div>';
			} else {
				$this->_elementHtmlTemplate = '<li class="ui-accordion-group"><a href="#" class="ui-accordion-header">%s</a><div class="ui-accordion-content">%s</div></li>';
			}
		}
		return $this->_elementHtmlTemplate;
	}

	/**
	 * Set the accordion element template
	 *
	 * @param  string $htmlTemplate
	 * @return ZendX_JQuery_View_Helper_AccordionContainer
	 */
	public function setElementHtmlTemplate($htmlTemplate)
	{
		if(substr_count($htmlTemplate, '%s') != 2) {
			require_once "ZendX/JQuery/View/Exception.php";
			throw new ZendX_JQuery_View_Exception(
                "Accordion Container HTML Template requires two sprintf() string replace markers '%s'."
                );
		}
		$this->_elementHtmlTemplate = $htmlTemplate;
		return $this;
	}
}